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Impurities

SynThink is a producer and supplier of a number of pharmaceutical Reference Standards (Impurity Standards) which are required for pharmaceutical companies to study quality, stability and biological safety of pharmaceutical products. Many API Impurities are available in our stock.

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Benazepril, Impurities

Benazepril EP Impurity D

$695.00 25 mg

Out of Stock

CAS No.

: 112110-48-2

Mol F.

: C24H34N2O5

Mol W.

: 430.54

Cat No.

: SA29604

Impurities, Nitrosamine

Benidipine Nitroso Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C28H30N4O7

Mol W.

: 534.6

Cat No.

: SA44668

Aspirin, Impurities

Benorilate

Please enquire for price & pack size

Out of Stock

CAS No.

: 5003-48-5

Mol F.

: C17H15NO5

Mol W.

: 313.3

Cat No.

: SA28508

Impurities, Varenicline

Benzimidazole Varenicline

Please enquire for price & pack size

Out of Stock

CAS No.

: 357424-12-5

Mol F.

: C12H13N3

Mol W.

: 199.25

Cat No.

: SA39513

Brexpiprazole, Impurities

Benzo[b]thiophene

Please enquire for price & pack size

Out of Stock

CAS No.

: 95-15-8

Mol F.

: C8H6S

Mol W.

: 134.2

Cat No.

: SA41321

Aspirin, Impurities

Benzoic acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 65-85-0

Mol F.

: C7H6O2

Mol W.

: 122.12

Cat No.

: SA28515

Gemcitabine, Impurities

Benzoic acid-(ethoxycarbonyl-difluoro-methyl)-2,3-dihydroxy-propyl ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 122111-10-8

Mol F.

: C14H16F2O6

Mol W.

: 318.3

Cat No.

: SA44505

Atropine, Impurities

Benzoyltropein

Please enquire for price & pack size

Out of Stock

CAS No.

: 16052-34-9

Mol F.

: C15H19NO2

Mol W.

: 245.32

Cat No.

: SA47711

Impurities, Pregabalin

Benzyl 3-((3-(Aminomethyl)-5-methylhexanamido)methyl)-5-methylhexanoate

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C23H2N2O3

Mol W.

: 390.56

Cat No.

: SA24825

Dapagliflozin, Impurities

Benzyl Dimer Dapgliflozin Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C28H30Cl2O6

Mol W.

: 533.44

Cat No.

: SA15057

Donepezil, Impurities

Benzyl Donepezil Bromide

Please enquire for price & pack size

Out of Stock

CAS No.

: 844694-85-5

Mol F.

: C31H36BrNO3

Mol W.

: 550.53

Cat No.

: SA34310

Ezetimibe, Impurities

Benzyl Ezetimibe Diol

$495.00 25 mg

Out of Stock

CAS No.

: 1374250-06-2

Mol F.

: C31H31F2NO3

Mol W.

: 503.59

Cat No.

: SA14816

Hydrochlorothiazide, Impurities

Benzylhydrochlorothiazide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1824-50-6

Mol F.

: C₁₄H₁₄ClN₃O₄S₂

Mol W.

: 387.86

Cat No.

: SA11205

Betamethasone, Impurities

Betamethasone

Please enquire for price & pack size

Out of Stock

CAS No.

: 378-44-9

Mol F.

: C22H29FO5

Mol W.

: 392.46

Cat No.

: SA26600

Betamethasone Dipropionate, Impurities

Betamethasone Dipropionate

Please enquire for price & pack size

Out of Stock

CAS No.

: 5593-20-4

Mol F.

: C28H37FO7

Mol W.

: 504.59

Cat No.

: SA14512

Betamethasone, Impurities

Betamethasone EP Impurity A

$95.00 25 mg

Out of Stock

CAS No.

: 50-02-2

Mol F.

: C22H29FO5

Mol W.

: 392.46

Cat No.

: SA26601

Betamethasone, Impurities

Betamethasone EP Impurity F

$1,595.00 25 mg

Out of Stock

CAS No.

: 330157-04-5

Mol F.

: C22H28O4

Mol W.

: 356.46

Cat No.

: SA26606

Betamethasone, Impurities

Betamethasone EP Impurity H

$1,595.00 25 mg

Out of Stock

CAS No.

: 185613-71-2

Mol F.

: C22H29FO5

Mol W.

: 392.46

Cat No.

: SA26608

Betamethasone, Impurities

Betamethasone EP Impurity I

$1,695.00 25 mg

Out of Stock

CAS No.

: 185613-69-8

Mol F.

: C22H29FO5

Mol W.

: 392.46

Cat No.

: SA26609

Betamethasone, Impurities

Betamethasone EP Impurity J

$1,695.00 25 mg

Out of Stock

CAS No.

: 18383-24-9

Mol F.

: C22H30O4

Mol W.

: 358.47

Cat No.

: SA26610

Betamethasone Valerate, Impurities

Betamethasone Valerate

Please enquire for price & pack size

Out of Stock

CAS No.

: 2152-44-5

Mol F.

: C27H37FO6

Mol W.

: 476.58

Cat No.

: SA18508

Betamethasone Valerate, Impurities

Betamethasone Valerate EP Impurity G

$455.00 25 mg

Out of Stock

CAS No.

Mol F.

: C27H36BrFO6

Mol W.

: 555.47

Cat No.

: SA18503

Betamethasone, Impurities

Betamethasone-21-Acetal

Please enquire for price & pack size

Out of Stock

CAS No.

: 1184871-60-0

Mol F.

: C44H56F2O11

Mol W.

: 798.91

Cat No.

: SA26615

Bicalutamide, Impurities

Bicalutamide

Please enquire for price & pack size

Out of Stock

CAS No.

: 90357-06-5

Mol F.

: C18H14F4N2O4S

Mol W.

: 430.38

Cat No.

: SA35300

Bicalutamide, Impurities

Bicalutamide EP Impurity A

Please enquire for price & pack size

Out of Stock

CAS No.

: 90357-05-4

Mol F.

: C18H15F3N2O4S

Mol W.

: 412.38

Cat No.

: SA35301

Bicalutamide, Impurities

Bicalutamide EP Impurity B

Please enquire for price & pack size

Out of Stock

CAS No.

: 1159977-36-2

Mol F.

: C18H14F4N2O4S

Mol W.

: 430.38

Cat No.

: SA35302

Bicalutamide, Impurities

Bicalutamide EP Impurity C

Please enquire for price & pack size

Out of Stock

CAS No.

: 906008-94-4

Mol F.

: C18H14F4N2O3S

Mol W.

: 414.38

Cat No.

: SA35303

Bicalutamide, Impurities

Bicalutamide EP Impurity D

Please enquire for price & pack size

Out of Stock

CAS No.

: 654-70-6

Mol F.

: C8H5F3N2

Mol W.

: 186.13

Cat No.

: SA35304

Bicalutamide, Impurities

Bicalutamide EP Impurity E

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C18H14F4N2O3S

Mol W.

: 414.38

Cat No.

: SA35305

Bicalutamide, Impurities

Bicalutamide EP Impurity F

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C18H14F4N2O3S

Mol W.

: 414.38

Cat No.

: SA35306

Bicalutamide, Impurities

Bicalutamide EP Impurity H

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C18H14F4N2O4S

Mol W.

: 430.38

Cat No.

: SA35307

Bicalutamide, Impurities

Bicalutamide EP Impurity I

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C17H14BrF4NO3S

Mol W.

: 468.26

Cat No.

: SA35308

Bicalutamide, Impurities

Bicalutamide EP Impurity J

Please enquire for price & pack size

Out of Stock

CAS No.

: 90356-78-8

Mol F.

: C18H14F4N2O2S

Mol W.

: 398.38

Cat No.

: SA35309

Bicalutamide, Impurities

Bicalutamide EP Impurity K

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C24H20F6N4O6S

Mol W.

: 606.5

Cat No.

: SA35310

Bicalutamide, Impurities

Bicalutamide EP Impurity M

Please enquire for price & pack size

Out of Stock

CAS No.

: 151262-57-6

Mol F.

: C10H11FO5S

Mol W.

: 262.26

Cat No.

: SA35311

Bicalutamide, Impurities

Bicalutamide Glucoronide Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C25H22F6N2O10S

Mol W.

: 656.51

Cat No.

: SA35315

Bicalutamide, Impurities

Bicalutamide Oxirane Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 90357-51-0

Mol F.

: C12H9F3N2O2

Mol W.

: 270.21

Cat No.

: SA35314

Bicalutamide, Impurities

Bicalutamide R-Isomer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 113299-40-4

Mol F.

: C18H14F4N2O4S

Mol W.

: 430.38

Cat No.

: SA35312

Bicalutamide, Impurities

Bicalutamide S-Isomer Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 113299-38-0

Mol F.

: C18H14F4N2O4S

Mol W.

: 430.38

Cat No.

: SA35313

Bicalutamide, Impurities

Bicalutamide Sulfoxide Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 945419-64-7

Mol F.

: C18H14F4N2O3S

Mol W.

: 414.38

Cat No.

: SA35316

Aciclovir, Impurities

Bis [Acetyl 2-[(2-Formamide-1,6-dihydro-6-chloro-9H-purin-9yl)methoxy]ethyl Ester]

Please enquire for price & pack size

Out of Stock

CAS No.

: 1346600-44-9

Mol F.

: C23H24Cl2N10O8

Mol W.

: 639.4

Cat No.

: SA21429

Atomoxetine, Impurities

Bis-(2-benzoylethyl)ether (Atomoxetine Impurity)

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C18H18O3

Mol W.

: 282.33

Cat No.

: SA22116

Impurities, Sitagliptin

Bis-benzyl Sitagliptin Maleate Adduct

$350.00 25 mg

Out of Stock

CAS No.

Mol F.

: C34H29F6N5O5

Mol W.

: 701.64

Cat No.

: SA10427

Impurities, Pregabalin

Bis-t-butyldimethylsilyl 6,6’-Dihydroxypregabalin Lactam

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C20H43NO3SiO2

Mol W.

: 401.73

Cat No.

: SA24811

Dapsone, Impurities

Bis(2-aminophenyl) Sulfone

Please enquire for price & pack size

Out of Stock

CAS No.

: 53347-49-2

Mol F.

: C12H12N2O2S

Mol W.

: 248.3

Cat No.

: SA27015

Dapsone, Impurities

Bis(2-nitrophenyl) Sulfide

Please enquire for price & pack size

Out of Stock

CAS No.

: 22100-66-9

Mol F.

: C12H8N2O4S

Mol W.

: 276.27

Cat No.

: SA27013

Dapsone, Impurities

Bis(2-nitrophenyl) Sulfone

Please enquire for price & pack size

Out of Stock

CAS No.

: 14665-52-2

Mol F.

: C12H8N2O6S

Mol W.

: 308.27

Cat No.

: SA27014

Impurities, Tiagabine

Bis(3-methylthien-2-yl)methanone

Please enquire for price & pack size

Out of Stock

CAS No.

: 30717-55-6

Mol F.

: C₁₁H₁₀OS₂

Mol W.

: 222.33

Cat No.

: SA10504

Dapsone, Impurities

Bis(4-hydroxyphenyl) Sulfone

Please enquire for price & pack size

Out of Stock

CAS No.

: 80-09-1

Mol F.

: C12H10O4S

Mol W.

: 250.27

Cat No.

: SA27017

Impurities, Ranitidine

Bis(methylthio)-2-nitroethylene

Please enquire for price & pack size

Out of Stock

CAS No.

: 13623-94-4

Mol F.

: C4H7NO2S2

Mol W.

: 165.23

Cat No.

: SA26516